Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
090081lightly pollutedexcellent141excellent
080093lightly pollutedexcellent141excellent
070094lightly pollutedexcellent141excellent
060093lightly pollutedexcellent161excellent
050094lightly pollutedexcellent141excellent
040092lightly pollutedexcellent151excellent
030095lightly pollutedexcellent201excellent
020094lightly pollutedexcellent151excellent
010091lightly pollutedexcellent151excellent
000095lightly pollutedexcellent161excellent
230087lightly pollutedexcellent151excellent
220088lightly pollutedexcellent132excellent
210088lightly pollutedexcellent141excellent
200065lightly pollutedexcellent101excellent
190058goodexcellent81excellent
180042goodexcellent51excellent
170032goodexcellent61excellent
160030goodexcellent51excellent
150027goodexcellent41excellent
140027goodexcellent41excellent
130031goodexcellent51excellent
120041goodexcellent71excellent
110037goodexcellent61excellent
100046goodexcellent101excellent